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Chapter 3 – Using the Web Management Software
MultiModem rCell User Guide 67
GRE Tunnels > GRE Tunnels
Tunneling allows the use of a public network to convey data on behalf of two remote private networks. It is also a way to
transform data frames to allow them to pass networks with incompatible address spaces or even incompatible protocols. If
you want to read more about how this works, see the online Help.
GRE Tunnel Configuration Group
Tunnel Name: Enter a name for the new tunnel.
Local IP: Select the local interface on which the tunnel is created. Eventually, the packets destined for this tunnel
are routed through it.
Note: When adding a tunnel, use only one of the following: Remote IP or FQDN.
Remote IP: Select the Remote IP address that marks the other end point of the tunnel. This is where the routed
packets are received).
OR
FQDN: Enter the FQDN (Fully Qualified Domain Name) for the Remote IP, which can be either the IP Address or an
FQDN.
Add Button: Click the Add button. The defined GRE tunnel configuration is added and appears at the bottom of
the screen.